•Sun visor type car Bluetooth-compatible handsfree •Built-in Bluetooth-compatible V4.2 chip +EDR,support Apple mobile phone SIRI function (voice dialing function) •Bluetooth-compatible maximum transmission distance of 10 meters (without occlusion) •Built-in 4ohm multimedia speaker and microphone,DSP based noise reduction and echo processing technology,giving you a clearer call quality •Can connect 2 mobile phones at the same time •Unique magnetic base design,suitable for multimedia Bluetooth-compatible audio in a variety of occasions in the car,indoor and outdoor •Built-in rechargeable large-capacity polymer battery 500mAh,long standby Specification: •Bluetooth-compatible Version: 4.2+EDR,compatible with iPhone's SIRI function (voice dial function) •Bluetooth-compatible Frequency: ISM2.4GHz •Frequency response: 20Hz-20KHz •Built-in Rechargeable Battery: 3.7V 500mAh •Bluetooth-compatible sound processing: use A2DP (via audio distribution profile) •Working voltage: 12 V~24 V •Extreme working voltage: 8~32 V •Working temperature: less than 70 degrees •Signal to noise ratio: greater than 60 dB •Distortion: less than 0.1% •Left and right channel separation: >60dB •Bluetooth-compatible transmission distance: less than 10m •Effective distance of Bluetooth-compatible microphone: 0.5-2m •Effective range launch: 2m •Material: ABS Package included: •1x Wireless In-car Speakerphone •1 x USB Cable •1 x Lanyard •1 x English User Manual